Basic Documentation
Table Of Contents
- 1 About this document
- 2 Overview
- 3 Notes
- 4 Functions
- 4.1 Temperature control
- 4.2 Operating modes
- 4.3 Room temperature setpoints
- 4.4 Application overview
- 4.5 Power supply selection for RDG200KN
- 4.6 Additional functions
- 4.7 Control sequences
- 4.7.1 Sequence overview (setting via P001)
- 4.7.2 Application mode
- 4.7.3 2-pipe fan coil unit
- 4.7.4 2-pipe fan coil unit with electric heater
- 4.7.5 2-pipe fan coil unit with radiator or floor heating
- 4.7.6 2-stage heating and cooling
- 4.7.7 4-pipe fan coil unit
- 4.7.8 4-pipe fan coil unit with electric heater
- 4.7.9 Chilled/heated ceiling and radiator applications
- 4.7.10 Compressor applications
- 4.7.11 Applications with external AQR sensor or QMX room operator unit
- 4.7.12 Setpoints and sequences
- 4.8 Control outputs
- 4.9 Fan control
- 4.10 Multifunctional input, digital input
- 4.11 Handling system faults
- 4.12 KNX communications
- 4.12.1 S-Mode
- 4.12.2 Master/slave configuration in KNX S-Mode
- 4.12.3 LTE-Mode
- 4.12.4 Zone addressing in LTE-Mode (with Synco)
- 4.12.5 Master/slave configuration in LTE-Mode
- 4.12.6 Example of heating and cooling demand zones
- 4.12.7 Send heartbeat and receive timeout
- 4.12.8 Startup
- 4.12.9 Heating and cooling demand
- 4.12.10 Fault and alarms function on KNX
- 4.13 Communication objects
- 4.14 Communication objects (LTE-Mode)
- 4.15 Control parameters
- 5 Supported KNX tools
- 6 Connection
- 7 Technical data
- 8 Dimensions
- Index
Functions
Additional functions
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In case the air flow is too low (especially with DC 0...10 V fans), this prevents cold
air from dumping into the room/warm air from bubbling straight up instead of
circulating.
To enable this function, the multifunctional input, to which the supply air sensor is
connected, needs to be set to "Supply air sensor" (e.g., P150 = 9). Then the
parameters for the limits are displayed (P063: minimum supply air temperature,
P064: maximum supply air temperature).
● This function is only active in Comfort mode with:
– Valve output type is 3-position (RDG200KN) or DC 0...10 V (RDG260KN)
– Electric heater is PWM / 3-position (RDG200KN) or DC 0...10 V
(RDG260KN)
● This function can not be used for radiators.
● This function can not be used in 4-pipe with 6-port ball valve application.
Set different limits to the flow in both sequences, heating and cooling to balance
heating and cooling systems and avoid hydraulic problems caused by the different
flow rates.
Cooling typically requires a higher flow rate than heating, and the combi valve
(PICV) is mechanically and manually set to the cooling flow limit.
However, when the system operates in heating mode, set another flow limitation.
The new limit to the DC 0...10 V signal (new 100 % heating demand) can now be
set with the parameter P256.
The function can be enabled on all combined heating/cooling applications with
DC 0...10 V output for universal and fan coil unit applications.
T[℃] Room temperature
Y10 DC 0…10 V signal
W Room temperature setpoint
YH Control command "Valve"
(heating)
YC Control command "Valve"
(cooling)
The function can be enabled for the following heating/cooling applications with
DC 0...10 V output. P256 is not visible on other applications.
Fan coil type
● 2-pipe
● 2-pipe with electrical heater
● 2-pipe with radiator
● 2-pipe/2-stage
● 4-pipe
● 4-pipe with electrical heater
● 4-pipe/2-stage
● 4-pipe with PICV and 6-port ball
valve as changeover
Universal type
● Chilled/heated ceiling
● Chilled/heated ceiling and electric
heater
● Chilled/heated ceiling and radiator
● 2-stage chilled/heated ceiling
● Chilled ceiling and radiator
● 2-stage chilled and heated ceiling
● H/C ceiling with PICV and 6-port
ball valve as changeover
Note
Flow limitation function for
combi valve (PICV) (P256,
RDG260KN)